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Finding the Fourth Proportional to 126,642.54, 174,768.10 and 69,280.64

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Solution

The fourth proportional to 126,642.54, 174,768.10 and 69,280.64 is: 95,608.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,642.54 : 174,768.10 = 69,280.64 : x
  2. Step 2: Convert to fraction form
    126,642.54/174,768.10 = 69,280.64/x
  3. Step 3: Cross multiply
    126,642.54x = 174,768.10 × 69,280.64
  4. Step 4: Simplify right side
    126,642.54x = 12,108,045,819.58
  5. Step 5: Solve for x
    x = 12,108,045,819.58/126,642.54
  6. Step 6: Final answer
    x = 95,608.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.